Azbil HTY7903T Bedienungsanleitung

AB-5963

Specifications/Instructions

Insertion Dewpoint Temperature Sensor

Model HTY79X3T (with Separate Temperature Sensor),

Model HY79X3T

General

Insertion dewpoint temperature sensor Model HTY79X3T

series uses a Pt100 resistant thermometer sensor (JIS*

C1604 Class A, equivalent to IEC60751: 95 Class A) for a

temperature sensing element, and a polymer capative

humidity sensor (FP3™specially developed by Azbil

Corporation ) for a dewpoint temperature sensing element,

enhancing accuracy and reliability of temperature sensing. It

is suitable for various applications such as a duct or chamber

for building air conditioning and outdoor air measurement, as

well as industrial applications. Model HY79X3 series (for

dewpoint temperature sensing without temperature sensor)

is also available.

∗JIS: Japanese Industrial Standards

Features

•Wide dewpoint temperature sensing range with high

accuracy.

•Highly environmental resistance.

•Excellent long term stability.

•Quick response and high repeatability.

•Easy installation in a duct/chamber with the quick

detachable bracket (dedicated).

•Dust-proof and splash-proof housing (IP54).

•CE Marking certified product:

Models HTY79X3T and HY79X3T conform to all the

applicable standards of CE Marking.

Model HTY7903T

Model HTY7913T

AB-5963

Safety Instructions

Please read instructions carefully and use the product as specified in this manual. Be sure to keep this manual near by for ready

reference.

Usage Restrictions

This product is targeted for general air conditioning. Do not use this product in a situation where human life may be affected. If

this product is used in a clean room or a place where reliability or control accuracy is particularly required, please contact Azbil

Corporation’s sales representative. Azbil Corporation will not bear any responsibility for the results produced by the operators.

WARNING

•Do not disassemble the product. Disassembly may result in electrical shock or equipment damage.

CAUTION

•Installation and wiring must be performed by qualified personnel in accordance with all applicable safety

standards.

•This product must be operated under the operating conditions (power, temperature, humidity, vibration, shock,

installation position, atmospheric condition, etc) specified in this manual to prevent equipment damages.

•This product must be operated within its rated operating ranges specified in this manual. Failure to comply will

cause equipment damages.

•All wiring must comply with local codes of indoor wiring and electric installation rules.

•This product does not have a power switch. Be sure to install a power circuit breaker for the power source.

•Lightning protection based on the regional characteristics and the building structure is necessary to minimize

lightning damages to the product.

•Always disconnect power source before performing any wiring to prevent equipment damages.

•Use crimp terminal lugs with insulation for electric wires to be connected to the product screw terminals.

•Make sure all the wires are tightly connected to prevent heat generation or equipment malfunction. Insufficient

tightening of the screw terminals also can cause inaccurate measurement.

•Leave vacant terminals unconnected to prevent product damage.

•Do not step on the product. External force can damage the product.

•If more than the rated power supply voltage is applied, product replacement is required for safety.

•Do not use two-away radio or any wireless device within 3 m radius of the product. It may lower the product

sensing accuracy.

•Carefully press the rubber packing. Personal injury can be caused when your fingers holding the tool slip.

•Dispose of this product as an industrial waste in accordance with your local regulations. Do not reuse all or part of

this product.

IMPORTANT:

•When the product is faulty, reduced output may cause over-humidification. Provide safety measure for the

controller in connection.

•Product sensing accuracy is preset before shipment. Output of the product, used even in normal air, may be

shifted depending on the operating conditions. Periodic inspection therefore may be required.

•Corrosive gas or organic solvent may damage the product or shift the product output. Before using the product

in abnormal atmosphere, consult with Azbil Corporation’s sales personnel.

Trademark information:

FP3 is a trademark of Azbil Corporation in Japan or in other countries.

AB-5963

Model Numbers

Base model

number Shape Type Power

supply

Humidity

output

Temperature

output Fixed Description

HTY79 Insertion dewpoint temperature sensor

(with separate temperature sensor)

HY79 Insertion dewpoint temperature sensor

0 Insertion length: Long

1 Insertion length: Short

3 ⎯

T 24 V DC / 24 V AC

1 Dewpoint temperature output: 1-5 V

4 Dewpoint temperature output: 4-20 mA

6 Dewpoint temperature output: 0-10 V

0 Without temperature sensor

P Temperature: Pt100

00 ⎯

Select a model number from below.

Model number Description Insertion length

HTY7903T1P00 Dewpoint temperature (1-5 V) + temperature (Pt100) Long

HTY7903T4P00 Dewpoint temperature (4-20 mA) + temperature (Pt100) Long

HTY7903T6P00 Dewpoint temperature (0-10 V) + temperature (Pt100) Long

HTY7913T1P00 Dewpoint temperature (1-5 V) + temperature (Pt100) Short

HTY7913T4P00 Dewpoint temperature (4-20 mA) + temperature (Pt100) Short

HTY7913T6P00 Dewpoint temperature (0-10 V) + temperature (Pt100) Short

HY7903T1000 Dewpoint temperature (1-5 V) Long

HY7903T4000 Dewpoint temperature (4-20 mA) Long

HY7903T6000 Dewpoint temperature (0-10 V) Long

HY7913T1000 Dewpoint temperature (1-5 V) Short

HY7913T4000 Dewpoint temperature (4-20 mA) Short

HY7913T6000 Dewpoint temperature (0-10 V) Short

AB-5963

Specifications

Item Specification

Temperature -20 °C to 60 °CMeasurement range

Dewpoint temperature -40 °C to 60 °C DP (-20 °C to 60 °C) (non-condensing)

Temperature 100 Ω/ 0 °C

Models HTY79X3T1, HY79X3T1 series:

1 V DC to 5 V DC (linear to -40 °C to 60 °C DP)

(Input impedance of the controller connected: 10 kΩor higher)

Models HTY79X3T4, HY79X3T4 series:

4 mA DC to 20 mA DC (linear to -40 °C to 60 °C DP)

(Maximum allowable load: 300 Ωor lower)

Output signal

Dewpoint temperature

Models HTY79X3T6, HY79X3T6 series:

0 V DC to10 V DC (linear to -40 °C to 60 °C DP)

(Input impedance of the controller connected: 10 kΩor higher)

Temperature ±0.3 °C (at -20 °C to 60 °C) (Pt100 element)Sensing accuracy

Dewpoint temperature ±1 °C DP (at 30 %RH to 90 %RH, 25 °C)

±2.5 °C DP (at 30 %RH to 90 %RH, -5 °C to 60 °C)

Temperature 4 min. or lessTime constant

(at 2 m/s air velocity) Dewpoint temperature 1 min. or less (at constant temperature)

Rated/extreme operating conditions Transport/storage conditions

Temperature

range

-20 °C to 60 °C -30 °C to 70 °CTemperature

measuring

Humidity

range

0 %RH to 100 %RH

(non-condensing)

5 %RH to 95 %RH

(non-condensing)

Temperature

range

-20 °C to 60 °C -30 °C to 70 °C

Environmental

conditions

Dewpoint temperature

measuring

Humidity

range

Rated: 10 %RH to 100 %RH

Extreme: 0 %RH to 100 %RH

(non-condensing)

5 %RH to 95 %RH

(non-condensing)

Vibration 4.9 m/s2(10 Hz to 150 Hz) 9.8 m/s2(10 Hz to 150 Hz)

(in packaged form)

Air velocity Extreme: 0 m/s to 15 m/s ⎯

Power supply voltage 24 V AC +10/-15 % (50 Hz/60 Hz), 24 V DC ±10 %

Power consumption Models HTY79X3T1, HY79X3T1 series with 1-5 V output:

Models HTY79X3T4, HY79X3T4 series with 4-20 mA output:

Models HTY79X3T6, HY79X3T6 series with 0-10 V output:

0.7 VA for 24 V AC / 600 mW for 24 V DC

1.4 VA for 24 V AC / 1200 mW for 24 V DC

0.7 VA for 24 V AC / 600 mW for 24 V DC

Withstand voltage 1 mA or less leakage current at 500 V AC for 1 minute (between the housing and terminals)

Insulation resistance 500 V DC, 20 MΩor higher (between the housing and terminals)

Enclosure rating Housing: IP54 (dust-proof and splash-proof with specified water-proof gland and multi-core cables used or with

specified conduit connected.)

Installation Duct, chamber, thermometer shelter (with dedicated bracket)

Connection Terminal block connection

Material, color Housing: 20 % GF containing polycarbonate resin, gray

Filter cap: Modified PPE resin, gray

Weight Models HTY7903, HY7903 series: Approx. 250 g

Models HTY7913, HY7913 series: Approx. 220 g

Accessories None

Parts (separate order

required)

Part No. 83157235-001:

Part No. 83157240-004:

Part No. 83104098-004:

Part No. DY8000A1001:

Part No. DY3002A1005:

Mounting bracket (packing, indicator label for installation holes, M4 screws)

Conduit mounting set (cable with φ11 mm to φ14 mm outer diameter is applicable.)

Seal connector (cable with φ10.5 mm to φ14.5 mm outer diameter is applicable.)

Sensor shield for outdoor

Mounting bracket for thermometer shelter (L-type bracket)

Replacement part

(separate order

required)

Part No. 83162945-003: Filter set (filter, filter cap)

CE Marking Conformity

This product complies with the following Electromagnetic Compatibility (EMC).

EMC: EN61326-1 Class B, Table 1 (For use in a basic electromagnetic environment)

AB-5963

Dimensions

Models HTY7903, HY7903 series

Models HTY7913, HY7913 series

Mounting bracket Part No. 83157235-001

Figure 1. Dimensions (mm)

247.6

51.3

45.6 67.3

113.5

110

φ20

108.6 51.3

45.6 67.3

113.5

110

φ20

62.5

72.3

3.3

AB-5963

Installation

Installation requirements

•Select a location where the typical temperature and

humidity of the measured gas can be sensed with the

wind speed specified.

•Make sure that the entire probe is immersed in the

measured gas. Also, make sure that airflow passes

perpendicular to the side of the probe.

•Leave adequate maintenance clearance in front of the

housing cover.

•When installing in steam-heating AHU, make sure the

probe is not directly exposed to the high-temperature

steam that exceeds the probe allowable operating

condition.

•When installing the probe pointing upward, do not allow

dew condensation on the probe. Otherwise, dew

condensation stays on the grooves of the filter cap,

causing measuring error (until it gets dried.).

CAUTION

•Do not step on the product. External force can

damage the product.

Installing Models HTY7903, HY7903 series

(for general AHU duct insertion)

1) Prepare the dedicated mounting bracket.

Attach the indicator label for mounting hole at the probe

mounting position, and make a mounting hole on the

duct.

Figure 2. Indicator label on the duct

2) Fix the mounting bracket onto the duct with M4 screws

(supplied with the bracket), inserting packing between

the duct and the bracket. (The side with longer

protruding part needs to face outward. See Fig. 3.)

Figure 3. Mounting bracket on the duct

3) Cover the duct with an insulating material. (If the duct is

already covered with it, partially remove the insulating

material for the bracket. Then, fill the clearance between

the bracket and the duct with the insulating material after

fixing the bracket.)

Figure 4. Duct and the mounting bracket

covered with insulating material

4) Turn the main unit stopper 45 degrees (from ‘a’ to ‘b’

shown in Fig. 5) to unlock, and insert the probe of the

main unit into the bracket as the main unit claws and the

bracket slits match.

Figure 5. Mounting the main unit on the duct

(with the mounting bracket)

5) Completely insert the probe into the duct. Then, fix the

probe and the bracket by turning the stopper 45 degrees

(from ‘b’ to ‘a’ shown in Fig. 6) to lock.

Figure 6. Fixing the main unit on the duct

(with the mounting bracket)

ir flow

Duct

Indicator label

ir flow

Duct

Packing

Mounting

bracket

ir flow

Insulating

material

Stopper

Claw

Main unit of

Model HTY7903/

Model HY7903

45°

b a

AB-5963

Wiring port

Seal connector

(with separate order required)

Installing Models HTY7913, HY7913 series

(for equipment, including chamber and thermometer

shelter, insertion)

1) Prepare the dedicated mounting bracket. Attach the

indicator label for mounting hole at the probe mounting

position, and make a mounting hole on the equipment

panel.

Figure 7. Indicator label on the panel

2) Fix the mounting bracket onto the equipment panel with

M4 screws (supplied with the bracket). (The side with

shorter protruding part needs to face outward. See Fig.

8.)

Figure 8. Mounting bracket on the panel

3) Turn the main unit stopper 45 degrees (from ‘a’ to ‘b’

shown in Fig. 9) to unlock, and insert the probe of the

main unit into the bracket as the main unit claws and the

bracket slits match.

Figure 9. Mounting the main unit on the panel

(with the mounting bracket)

4) Completely insert the probe into the panel. Then, fix the

probe and the bracket by turning the stopper 45 degrees

(from ‘b’ to ‘a’ shown in Fig. 10) to lock.

Figure 10. Fixing the main unit on the panel

(with the mounting bracket)

Wiring (common to Models HTY7903/HY7903 and

HTY7913/HY7913 series)

Wiring procedure

1) Open the front cover by pressing the claw of the case.

(See ‘a’ in Fig. 11.) At this time, open 30 degree wide or

wider. (See ‘b’ in Fig. 11.) Then lift the front cover to

detach. (See ‘c’ in Fig. 11.)

Figure 11. Detaching the front cover

2) Lead the cable through the wiring port.

Seal connector connection

Prepare the appropriate seal connector (with separate

order required), depending on the quantity of core cables.

Screw the threaded seal connector onto the wiring port

and lead the cables through the port.

Figure 12. Seal connector connection

Mounting

bracket

Panel

Side view

Stopper

Claw

Main unit of

Model HTY7913/

Model HY7913

a b

45°

Indicator label Panel

b a

a. Press.

Claw

b. Open.

c. Detach.

AB-5963

O-ring

ttachment

Conduit fixing screws

Conduit nut

Conduit connector

(DN 25)

Straight box connector

(DN 24 - DN 25)

a. Pull.

b. Seal the wiring port.

Conduit connection

Prepare the appropriate conduit set (with separate order

required), depending on the quantity of core cables.

Temporarily screw the conduit connector and the

attachment, and select an O-ring appropriate for the

cable.

Figure 13. Conduit connection (1/2)

Lead the cable in, as shown in Fig. 14. Pull up the cable

(‘a’ in Fig. 14) and screw the attachment onto the wiring

port. Tighten the conduit nut on the conduit at a position

where the conduit set screw can be tightened easily.

Then, seal the wiring port (‘b’ in Fig. 14).

Figure 14. Conduit connection (2/2)

3) Connect the cables to the terminals.

Connect the core cables to the terminals, and attach the

front cover.

Figure 15. Attaching the front cover

Then, tighten the seal connector (for seal connector

connection).

Figure 16. Tightening the seal connector

Figure 17. Connection of 7- and 4-core cables to terminals

CAUTION



•Make sure all the wires are tightly connected to

prevent heat generation or equipment

malfunction. Insufficient tightening of the screw

terminals also can cause inaccurate

measurement.

•Leave vacant terminals unconnected to prevent

product damage.

IMPORTANT:

Do not remove the terminal cover except when

connecting or disconnecting the wires. When

removing the terminal cover, make sure that the

wires are not electrified before connecting/

disconnecting wires. After the connection/

disconnection, be sure to attach the terminal cover

again.

4) After completing wiring, be sure to attach the front cover.

ttachment Conduit nut

Conduit connector

(DN 25)

Tighten.

Models

HTY7903T1P00

HTY7903T4P00

HTY7903T6P00

HTY7913T1P00

HTY7913T4P00

HTY7913T6P00

(7-core cable)

Models

HY7903T1000

HY7903T4000

HY7903T6000

HY7913T1000

HY7913T4000

HY7913T6000

(4-core cable)

24 V AC

24 V DC

1-5 V DC

0-10 V DC

4-20 mA

Pt 100

(+)

(-)

Power

supply

Dewpoint

temperature

Temperature

∼

⊥

AB-5963

Wiring requirements

•Shielded multi-core cables (JCS* CVV-S cables) of

1.25 mm² or 2 mm² are recommended for power line and

dewpoint temperature output line. Be sure to ground the

shielded cable for the controller.

•Without dust-proof or splash-proof enclosure, a

1.25 mm² or 2 mm² cable (JIS IV cable) can be used for

power line and temperature output line, and a 1.25 mm²

shielded cable for dewpoint temperature output line.

The maximum cable length is 100 m.

•Never connect power to temperature output terminal to

prevent smoking.

•Always check wiring before supplying power.

Never share 24 V AC transformer with other products.

∗JCS: Japanese Electric Wire & Cable Makers’

Association Standards

Never share AC transformer for Model HY79/HTY79 with

any other equipment.

CAUTION



•Use insulated transformer to supply 24 V AC

power. Never share 24 V AC power supply

with other equipment. If a transformer is

shared, loop will be formed at common and

the sensor may be damaged.

24 V AC Transformer shared with two sensors

∗Fig. 18 shows wiring example of Model HY79X3T.

Figure 18. Incorrect wiring: shared 24 V AC transformer

Separate 24 V AC transformers for two sensors

∗Fig. 19 shows wiring example of Model HY79X3T.

Figure 19. Correct wiring: separate 24 V AC transformers

24 V DC Transformer shared with two sensors

∗Fig. 20 shows wiring example of Model HY78X3T.

∗For connecting terminals [-] and [E] (3 and 2), use power with

0.022 μF or lower capacitive coupling.

Figure 20. Correct wiring: shared 24 V DC transformer

Follow the below instructions to prevent an induction current

flowing from the dewpoint temperature sensor to the

controller input circuit, or to prevent noise from generating

due to inadequate time constant of the controller input.

•Use a controller with a low pass filter (40 dB or higher

removal ratio in normal mode) for receiving signals.

•Connect an isolator to the controller input circuit if a

removal ratio is not enough.

•No problem will occur for connecting with the controllers

provided by Azbil Corporation.

IMPORTANT:

•Select the power for this product based on the

allowable load (max. current and max. power

consumption).

•Note that 4-20 mA output type is not applicable to

Model RYY792D converter.

loop is formed at

common.

Incorrect

Dewpoint temperature

sensor

24 V AC

Controller

Shared

Common line

∼

Dewpoint temperature

sensor

∼

+ +

⊥- -

⊥

Correct

24 V AC ∼

24 V AC

Controlle

∼

+ +

- -

⊥

No loop is formed

at common.

Dewpoint temperature

sensor

Dewpoint temperature

sensor

Though a loop is formed at

common, common mode noise

affects little.

Correct

24 V DC

Controller

∼

+ +

⊥

- -

⊥

Dewpoint temperature

sensor

Dewpoint temperature

sensor

0.022

F or lower

AB-5963

Maintenance

Since the dewpoint temperature sensor is inspected and

calibrated for high accuracy at the factory before shipment,

no field calibration is necessary. Follow the maintenance

instructions below:

Periodic inspection

Periodically inspect the sensor for its sensing accuracy and

clean the cover. Set the period between inspections based

on atmospheric dust and other contaminants in the

installation environment.

Troubleshooting

If any problem occurs during operation, refer to the following

table for appropriate solutions.

Troubleshooting and solution

Problems Check items Solutions

•No output

generated

•Unstable

output

•Loose wiring

•Disconnected wiring

•Power supply

voltage

•Sensor damages

•Tighten the terminal

block.

•Re-perform wiring.

•Replace the sensor.

•Slow

response to

output

•Moisture/

condensation

on the sensor

•Detach the main unit

from the bracket, and

remove the filter cap

and the filter.

Dry power-off state

sensor in clean air

seasoning.

•Error in

output

•Installed location

•Dust and

contamination on

the sensor

•Refer to the

‘Installation

requirements’.

•Clean the filter.

•Replace the filter.

•Perform dewpoint

single-point calibration.

•Replace the sensor.

Filter replacement:

CAUTION

•Installation must be performed by qualified

personnel in accordance with all applicable

safety standards.

IMPORTANT:

Be sure not to touch the print board or other parts

when they are not covered by the filter cap or the

filter.

1) Prepare the new filter set (with separate order required)

to replace with. Remove the old filter cap and filter (to

replace) by hand.

Figure 21. Filter cap removal

2) Before attaching the new filter, check that the rubber

packing sealing the sensing element is not raised from

the probe, as shown in Fig. 22.

Figure 22. Rubber packing position

For rubber packing raised, press it using a slotted

screwdriver as shown in Fig. 23.

Carefully handle the tool so as not to damage the

packing or other part of the product.

Figure 23. Pressing rubber packing

CAUTION

•Carefully press the rubber packing. Personal

injury may result when your fingers holding the

tool slip.

Filter cap

(removed with the filter

inside the cap.)

Loosen.

Rubber packing:

not raised from the probe to

completely seal the element.

Rubber packing:

raised from the probe.

Sensing element may not

completely be sealed.

Sensing

element

Sensing

element

Press rubber packing using a

tool such as a slotted

screwdriver so that the raised

packing is placed back in

position.

Press

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