Dwyer Series AD User manual

Dwyer Series AD User manual
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The Air/Duct Temperature Sensors are available in precision
platinum, nickel, or balco RTDs and interchangeable NTC ther-
mistors. Sensors are constructed with a hermetically sealed 304
SS sheath and are unaffected by high humidity, contamination,
thermal shock or vibration. Flange mount sensors offer low profile
mounting and quick installation directly into duct work. Select
bulkhead mounting if an adjustable insertion depth is required.
Rugged air/duct sensors are ideal as air handlers, for cord units,
ducts, furnaces, freezers, ovens and other through wall tempera-
ture sensing applications.
Ordering Information
PROBE
INSTALLATION SENSOR LENGTH
1 - Flange mount, 1 - 100-ohm platinum — 4 - 4 inches/
3-inch lead wire RTD 100 mm
2 - Flange mount, 2 - 1,000-ohm plat- 6 - 6 inches/
6-foot cable inum RTD 150 mm
3 - Bulkhead fitting, 3 - 1,000-ohm nickel 8 - 8 inches/
3-inch lead wire RTD 200 mm
4 - Bulkhead fitting, 4 - 1,000-ohm Balco 12 - 12 inches/
6-foot cable RTD 300 mm
5 - 10,000-ohm NTC
thermistor
6 - 3,000-ohm NTC
thermistor
7 - 5,000-ohm NTC
thermistor
8 - 100,000-ohm NTC
thermistor
9 - 20,000-ohm NTC
thermistor
LOVE CONTROLS DIVISION
DWYER INSTRUMENTS, INC.
P.O. BOX 373 « MICHIGAN CITY, INDIANA 46361, U.S.A.
Bulletin E-90-AD
Series AD Air/Duct Temperature Sensors
Specifications - Installation and Operating Instructions
в
| | = 91/4
2 1-12 5 [ 106.35)
50.80] [38100 = No |
FLANGE MOUNT
3/8-24 UNF-2A
91/4
| (06.35)
9/16 HEX
BULKHEAD MOUNT
SPECIFICATIONS
Platinum RTD Sensors: 0.1% @ 32°F (0°C), Alpha: 385 per
DIN 43760.
Nickel RTD Sensors: +0.5°F @ 70°F (21.1°C), 6,000 PPM/K
T.C.R.
Balco RTD Sensors: =:0.5°F @ 70°F (21.1°C), 4,300 PPM/K
T.C.R.
Thermistor Sensors: =0.2°C interchangeability @ 77°F (25°C).
Operating Temperature: -40 to 250°F (-40 to 125°C).
Probe Material: 1/4” (6.3 mm) O.D., 0.5 mm wall 304 SS.
Flange Material: 304 SS.
Bulkhead Fitting: Brass with poly compression sleeve.
INSTALLATION
Before Installation
* Read these instructions carefully. Failure to do so can result in
damage or electrical shock.
* Inspect packaging for signs of damage. If damaged, notify the
carrier immediately.
* Verify that the sensor specifications are suitable for the particu-
lar application.
e Installers must be trained and qualified technicians.
* Important: All wiring must be compatible with applicable
codes, ordinances, and instructions.
Location - Install the sensor in a location where it will sample the
average air temperature in a duct. Avoid areas where the air is
stratified because these areas can cause sensing errors.
Installing the Flange Mount Sensor
1. Drill a 3/8" (9 mm) hole into the duct or plenum where the sen-
sor will be installed.
2. Insert the sensor probe into the duct or plenum until the flange
rests against the duct or plenum wall.
3. Use the flange as a template to mark and drill holes for two #8
self-tapping sheet metal screws (not provided).
4. Fasten the sensor to the duct or plenum wall with the sheet
metal screws.
5. Make the wiring connections. See Figure 3.
Phone: 219/879-8000 www.dwyer-inst.com
Fax: 219/872-9057
e-mail: [email protected]
Figure 3. Installing the Flange Mount
Installing the Bulkhead Sensor
1. Drill a 3/8-inch (9 mm) hole into the duct or plenum where the
sensor will be installed.
2. Remove the mounting nut from the bulkhead fitting.
3. Insert the sensor probe into the duct or plenum until the bulk-
head fitting rests against the duct or plenum wall.
4. Guide the nut along the probe and tighten against the duct or
plenum.
5. Make the wiring connections. See Figure 4.
Figure 4. Installing the Bulkhead Sensor
©Copyright 2005 Dwyer Instruments, Inc.
LOVE CONTROLS DIVISION
DWYER INSTRUMENTS, INC.
P.O. BOX 373 MICHIGAN CITY, INDIANA 46361, U.S.A.
Printed in U.S.A. 7/05
Phone: 219/879-8000
Fax: 219/872-9057
Checkout
Allow the sensor to stabilize in (or against) the pipe for a minimum
of five minutes before taking a resistance measurement.
1. Disconnect the sensor lead wires from the controller.
2. Connect an ohmmeter across the lead wires.
3. Ensure that nominal resistance measurements are in accor-
dance with the resistance/temperature curves.
4. Reconnect sensor lead wires to the controller.
5. Check operation of the complete control system.
MAINTENANCE
The Series AD Air/Duct Temperature Sensor is not field serviceable
and should be returned if repair is needed (field repair should not
be attempted and may void warranty). Be sure to include a brief
description of the problem plus any relevant application notes.
Contact customer service to receive a return goods authorization
number before shipping.
FR #R1-443367-00
www.dwyer-inst.com
e-mail: [email protected]
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