Siemens QAM2020.045 Betriebsanleitung

1000

Ω

Nickel RTD

Sensors

Technical Instructions

Document No. 155-330P25

September 5, 2008

Siemens Industry, Inc.

QAM2020.045, QAM2020.020 and

QAM2020.010

Duct Point Sensor

QAE2020.005 Immersion Sensor

QAC2020U Outside Air Sensor

QAA24U Room Sensor

QAA25U Room Sensor with

Remote Setpoint Adjustment

QAP22 Cable Temperature Sensor

Application The 1000 ohm Nickel temperature sensors are used in HVAC installations to measure

room, outside air, duct or liquid temperature. They can also be used to provide

changeover from heating to cooling, or vice versa.

They are designed for integration in terminal units such as fan coil or induction units.

The sensors can be installed either by the terminal unit manufacturer or on site.

Product Numbers

Table 1.

Product Number Description

QAM2020.045

Duct point sensor, 18-inch

QAM2020.020

Duct point sensor, 8-inch

QAM2020.010

Duct point sensor, 4-inch

QAE2020.005

Immersion sensor

QAC2020U

Outside air sensor

QAA24U

Room sensor

QAA25U

Room sensor with remote setpoint adjustment

QAP22

Cable temperature sensor

Technical Instructions 1000 ΩNickel RTD Sensors

Document Number 155-330P25

September 5, 2008

Information in this publication is based on current specifications. The company reserves the right to make changes in specifications and models as

design improvements are introduced. Products or company names mentioned herein may be the trademarks of their respective owners.

Siemens Industry, Inc.

Building Technologies Division

1000 Deerfield Parkway

Buffalo Grove, IL 60089

+ 1 847-215-1000

Your feedback is important to us. If you have

comments about this document, please send them

to SBT_technical.editor.us.sbt@siemens.com

Document No. 155-330P25

Printed in the USA

Page 2

Principle of

Operation The sensor's nickel sensing element measures the air or medium temperature.

The resistance of the sensing element changes as a function of the ambient

temperature.

Mechanical Design The QAP22 Cable Temperature Sensor sensing element is incorporated in the

1000 Ohm Nickel RTD sensors. It is a nickel resistor housed in a metal sleeve so that it

is mechanically and electrically protected. The connecting cable inside the metal sleeve

is provided with a strain relief.

•The QAA24U and QAA25U room sensors have a temperature sensor mounted

on a circuit board.

•The plastic housing has a detachable wall plate.

Specifications

QAM2020.045,

QAM2020.020,

QAM2020.010,

QAE2020.005,

QAC2020U and QAP22

Range of use –13°F to 203°F (−25°C to 95°C)

Sensing element Siemens Ni1000 at 32°F (0°C)

Permissible ambient temperature

Cable –13°F to 203°F (−25°C to 95°C)

Intermittent (two hours/day) –13°F to 230°F (−25°C to 110°C)

Permissible ambient humidity 95% rh 30 days

Connecting cable (QAP22) PVC, 20 AWG

Length 6 feet (1.8 m)

QAA24U and QAA25U Range of use 32°F to 122°F (0°C to 50°C)

Sensing element Siemens Ni1000 at 32°F (0°C)

Permissible ambient temperature 32°F to 122°F (0°C to 50°C)

Permissible ambient humidity <85% rh

Wiring screw terminals for wires of 2 × 16 AWG or 1 × 12 AWG

Minimum 20 AWG

Installation Complete installation instructions are provided with the sensors.

Accessories AQM2000 Flange gasket kit (if adjustable depth is required for QAM2020.045 duct

point temperature sensors)

ARG70 Wall plate kit (required for wall box mounting)

Wiring

Legend:

B1 Temperature sensor

signal

B2 Setpoint signal

M Measuring, neutral

Figure 1. QAP22,

QAM2020.045, QAM2020.020,

QAM2020.010 and

QAE2020.005.

Figure 2. QAA24U.

Figure 3. QAA25U.

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