ThermoWorks Therma 20 Plus Bedienungsanleitung

Therma 20 Plus

Therma 22 Plus

ThermaCheck Plus

Operating Instructions

INSTRUMENT OPERATION - Where applicable

(Therma 20 Plus and Therma 22 Plus) connect a probe

via the socket located at the top of the instrument,

screw in the collar of the plug, ﬁnger tight, to ensure

a secure connection (do not over tighten). Switch the

instrument on and apply the tip of the probe to the

substance or medium to be measured. The instrument

reading may take a few seconds to stabilize, depending

on the nature of the measurement and sensitivity of

the probe.

HOLD - Press the HOLD button to stop measurements

and freeze the display temporarily, press again to

continue measuring.

AUTO-OFF - The unit will switch off automatically after

10 minutes. To disable auto-off press the HOLD button

while switching on the instrument (this is reset when

the instrument is switched off).

OPEN CIRCUIT/FAULTY PROBE - If the probe has

developed an 'Open Circuit' fault the instrument will

display 'Err'.

SENSORS - The ThermaCheck Plus incorporates a ﬁxed

thermistor probe. The Therma 20 Plus operates with

an interchangeable thermistor probe. The Therma 22

Plus operates with either a interchangeable thermistor

or type T thermocouple probe. These instruments

are designed to be compatible with ThermoWorks

manufactured probes.

BATTERY REPLACEMENT - The instrument will display

a low battery symbol to warn that the batteries will need

changing soon. The instrument continues to measure

accurately but after further usage the instrument will

display 'ﬂat bat' and shutdown. Replace the three AAA

batteries located under the rear case half that is held

in place by six screws. Check the seal for damage

and carefully replace the rear case half and re-ﬁt and

tighten the screws.

MAX/MIN - Press the MAX/MIN button to display the

values. The instrument retains the max/min values

when switched off. To reset, press the MAX/MIN button

for three seconds, 'rst' will be displayed.

BACKLIGHT - Press the HOLD button for two seconds.

Please Note: the backlight will not operate if the low

battery symbol is being displayed. (Backlight timeout

= 20 seconds).

°F/°C - Press and hold ON/OFF button for ﬁve seconds

at start-up.

GUARANTEE - This instrument carries a two-year

warranty against defects in either components or

workmanship. During this period, products that prove to be

defective will, at the discretion of ThermoWorks, be either

repaired or replaced without charge. This warranty does

not apply to probes, where a six-month period is offered.

Full details of liability are available within ThermoWorks’

Terms & Conditions of Sale at www.thermoworks.com/

product-warranty.

SPECIFICATION - Full specification details of all

products are available at www.thermoworks.com.

SPECIFICATIONS

(Therma 20 Plus & ThermaCheck Plus)

SPECIFICATIONS

(Therma 22 Plus)

–40 to 302°F (–39.9 to 149.9°C)

0.1°

±0.7°F (±0.4°C) from –21.8 to 265.8°F

(–29.9 to 129.9°C)

Thermistor

3x 1.5V AAA, 10,000 hours

After 10 minutes

0.6 inches (15 mm) LCD

5.6 H x 2.8 W x 1.26 D inches

(141 H x 71 W x 32 D mm)

0.49lb. (220g)

NIST-traceable calibration certiﬁcate

–328 to 752°F (–199.9 to 400°C)

–40 to 302°F (–39.9 to 149.9°C)

0.1° to 572°F (300°C) thereafter 1°

±0.4°F (±0.2°C)

±0.9°F (±0.5°C) –58 to 302°F

(–50 to 150°C)

±0.7°F (±0.4°C) –14 to 158°F

(–10 to 70°C)

Type T thermocouple or thermistor

3x 1.5V AAA, 10,000 hours

0.6 inches (15 mm) LCD

5.6 H x 2.8 W x 1.26 D inches

(141 H x 71 W x 32 D mm)

0.49lb. (220g)

NIST-traceable calibration certiﬁcate

Temperature Range:

Resolution:

Accuracy:

Sensor:

Battery:

Auto-Off:

Display:

Dimensions:

Weight:

Calibration:

Range (Type T T/C):

Range (Thermistor):

Resolution:

Instrument Accuracy:

Accuracy (Type T T/C):

Accuracy (Thermistor):

Sensor:

Battery:

Display:

Dimensions:

Weight:

Calibration:

INSTRUMENT RECORD CARD

Model Order Code

Therma 20 Plus 232-040

Therma 22 Plus 232-041

ThermaCheck Plus 232-042

P-13-003-02-web Ref: 547-141 / 21.08.19

Serial no. _____________________________________

Calibrated by__________________ Date ____________

This instrument has been checked or calibrated against

reference instrument(s) calibrated by a UKAS Accredited

Calibration Laboratory.

32°F (0°C)212°F (100°C)

Thermocouple

Thermistor

CALIBRATION

ThermoWorks, Inc.

Utah, U.S.A.

Ph: 801-756-7705 Fax: 801-756-8948

www.thermoworks.com

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