AccuMac AM1710 User manual

Rev. 201803V1
AM1710 Secondary Reference
Platinum Resistance Thermometer
User’s Guide
Please download the latest version at www.accumac.com

AM1710 Secondary Reference PRT User’s Guide
Rev. 201803V1 1/10
Table of Contents
Before you start ---- Warnings & Cautions ........................................................................ 2
1 Introduction................................................................................................................. 3
1.1 Main Application ................................................................................................ 3
1.2 Main Features...................................................................................................... 3
1.3 Calibrations ......................................................................................................... 3
2 Specifications .............................................................................................................. 4
2.1 Specifications ...................................................................................................... 4
3 General Operations .................................................................................................... 5
3.1 Connecting to the readout device ........................................................................ 5
3.2 Drive Current ...................................................................................................... 5
3.3 Stability of Readings ........................................................................................... 5
3.4 Immersion Requirements .................................................................................... 5
3.5 Thermal EMF ...................................................................................................... 6
3.6 Over heating ........................................................................................................ 6
4 Care and Handling Guidelines ................................................................................... 7
5 Troubleshooting .......................................................................................................... 8
5.1 Troubleshooting .................................................................................................. 8
5.2 Problem Causes and Solutions ............................................................................ 8
6 Limited Warranty & Limitation of Liability................................................................ 9

AM1710 Secondary Reference PRT User’s Guide
Rev. 201803V1 2/10
Before you start ---- Warnings & Cautions
 Warnings: Follow these guidelines to avoid personal injury:
1. Only use this instrument in the manufacture specified
temperature range.
2. The handle of this instrument can become hot when it is
used to measure high temperatures for extended periods of
time.
3. DO NOT submerge PRT handle when taking
measurement.
4. DO NOT use this instrument to measure the temperature
of any hazardous live component.
5. Follow all other safety guidelines listed in this user’s
guide.
 Cautions: Follow these guidelines to avoid possible damage
to the instrument:
1. Avoid mechanical shocks. DO NOT drop or slam the
probe in any way. This will cause damage to the probe
internally and affect its calibration and accuracy.
2. Read Section entitled “Care and Handling Guidelines”
before removing the PRT from the shipping box. Incorrect
handling can damage the PRT and void the warranty.
3. Keep the shipping container in case it is necessary to ship
the PRT. Incorrect packaging of the PRT for shipment can
cause irreparable damage.
4. Calibration Equipment should only be used by Trained
Personnel.

AM1710 Secondary Reference PRT User’s Guide
Rev. 201803V1 3/10
1 Introduction
1.1 Main Application
AM1710 Secondary Reference Platinum Resistance Thermometer
(PRT) is an interpolating instrument converting temperature to
resistance. It works together with readout device to measure
temperature or change of temperature. It has wide applications for
dry-wells or temperature baths.
1.2 Main Features
 High accuracy: 0.015 ºC at 0.01 °C
 Temperature range:
:
-60°C to 160°C
 Durable and shock resistance
1.3 Calibrations
It is recommended to calibrate this PRT annually over the full
temperature range. In between annual calibrations, user can check
the drift rate by comparing Rtpw against the last calibration results.
Refer to specifications section for normal drift rate.

AM1710 Secondary Reference PRT User’s Guide
Rev. 201803V1 4/10
2 Specifications
2.1 Specifications
Temperature Range -60°C to 160°C
Resistance at 0 °C Nominal 100 Ω
Temperature Coefficient 0.003925 Ω/ Ω/°C
Accuracy ±0.015°C at 0.01 °C
Drift ±0.01 °C at TPW after 100 hours at 160 °C
Short Term Stability ±0.007°C
Thermal Shock ±0.005°C after 10 times thermal cycles from minimum to
maximum temperatures
Hysteresis <=0.005°C
Self-heating 50 mW/°C
Response Time 9 seconds for 63% response to step change in water moving
at 3 feet per second
Measurement Current 0.5 mA or 1 mA
Sensor Length 32 mm
Sensor Location 5 mm from tip
Insulation Resistance >1000 MΩ at room temperature
Sheath Material Inconel
tm
Dimension 1710-12: 0.25 inch X 12 inch (6.35 mm X 305 mm)
1710-9: 0.187 inch X 9 inch (4.75 mm X 229 mm)
External Leads Teflon
tm
–insulated copper wire, 4 leads, 2.5 meters
Handle Dimension 1710-12: 15mm (OD) x 65mm (L)
1710-9: 10mm (OD) X 50 mm (L)
Handle Temperature Range -50°C to 160°C
Calibration Options NIST traceable calibration and data, Ordering # 5017;
ISO17025/NVLAP Accredited Calibrations available per
request

AM1710 Secondary Reference PRT User’s Guide
Rev. 201803V1 5/10
3 General Operations
3.1 Connecting to the readout device
The AM1710 is equipped with a four-wire cable (see Figure 1).
Four lead wires are used to cancel lead wire resistance. For best
results, the readout device should be equipped to handle four-
terminal resistors. The lead wires can be distinguished by
insulation colors. Lead wire pairs attached to each end of the
sensor are identified by red/black and white/blue insulation.
3.2 Drive Current
AccuMac recommends 1mA as drive current to ensure the best
measurement.
3.3 Stability of Readings
To achieve the best accuracy, allow sufficient time for PRT to
stabilize before taking the readings.
3.4 Immersion Requirements
Stem effect can cause measurement errors due to heat lost or
gained by the sensing element through the thermometer stem. To
minimize the error, appropriate immersion depths are required. A
practical way to determine the minimum immersion depths is to
Figure1
Black Blue
White Red

AM1710 Secondary Reference PRT User’s Guide
Rev. 201803V1 6/10
change the depth gradually until the readings have significant
changes after stabilization.
Do not submerge PRT handle when taking measurement.
3.5 Thermal EMF
Each AccuMac PRT has gone through an annealing process and
stability test to minimize the thermal EMF, which is caused by
either impurities of sensing element or temperature differentials at
lead wires connection point.
3.6 Over Heating
The sensing element of AM1710 PRT is sealed inside an Inconel
tm
sheath to ensure the best stability and repeatability. The seal can be
breached if the PRT is over heated for an extended period of time.

AM1710 Secondary Reference PRT User’s Guide
Rev. 201803V1 7/10
4 Care and Handling Guidelines
1. DO NOT subject the PRT to any physical shocks and
vibrations.
a. When not using the PRT, keep it in a place that’s not
prone to drop, slam, bang, vibration or other strong
physical contacts. Use a protective box or a carrying
case whenever possible.
b. When shipping the PRT, use protective box and other
protective packaging materials to minimize mechanical
shocks as much as possible.
c. When using dry blocks, make sure the well diameter is
appropriate to allow the PRT move up and down
smoothly.
2. DO NOT subject the PRT to any contaminations.
a. Keep the PRT as clean as possible. Avoid
contaminations as much as possible.
3. DO NOT over heat.
a. Do not use PRT above the manufacture specified
temperature range.
b. Do not expose the PRT handle and lead wires to
extreme temperatures.

AM1710 Secondary Reference PRT User’s Guide
Rev. 201803V1 8/10
5 Troubleshooting
5.1 Troubleshooting
If the PRT functions abnormally, it could be caused by several
possible problem conditions that are described in this section. Try
the solutions recommended and if the problems are still not solved,
contact manufacture for warranty or repair service. Be sure to have
the model number and serial number of your PRT available.
5.2 Problem Causes and Solutions
a. R0/Rtpw becomes higher significantly. This is likely caused
by mechanical shocks. The PRT should be annealed to
release the stress of platinum wires and to recover R0/Rtpw
value. Measure R0/Rtpw of the PRT after annealing to verify.
b. R0/Rtpw unstable during the measurement. This is likely
caused either by bad connections or sensor coils short. Check
the connections first and if the connections are good, the PRT
may be damaged.

AM1710 Secondary Reference PRT User’s Guide
Rev. 201803V1 9/10
6 Limited Warranty & Limitation of Liability
Each product from AccuMac Corporation is warranted to be free
from defects in material and workmanship under normal use and
service. The warranty period is 1 year for the Platinum Resistance
Thermometer. The warranty period begins on the date of the
shipment. Parts, product repairs, and services are warranted for 90
days. The warranty extends only to the original buyer or
end-user customer of an AccuMac authorized reseller. The
warranty will not extended to products that have been misused,
altered, neglected, or damaged by accident or abnormal conditions
of operation or handling.
To obtain warranty service, contact AccuMac Corporation at:
90 N William Dillard Drive C-107
Gilbert, AZ 85233
USA
Tel: [phone]
Email: [e-mail]