AMC SIR Series Руководство по эксплуатации - Страница 15
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Печатать страницуAMC-SIR Refrigerant Gas Sensor/Transmitter
5 CALIBRATION
This section describes the calibration procedure for the AMC-SIR Refrigerant Gas
sensor/transmitter.
Each AMC-SIR Refrigerant Gas sensor/transmitter is factory calibrated and should be ready for
operation after installation and a 60 minute stabilization time.
Verification of calibration is recommended two times per year.
applications, more frequent checks are recommended.
Caution:
- Only qualified personnel should perform the actual calibration.
- Users new to gas calibration are advised to consult with Armstrong Monitoring
The Armstrong Monitoring Corporation offers the following calibration plans:
1. Factory pre-calibrated replacement sensor/transmitter units
2. On site installation and calibration by Armstrong Monitoring
3. On site calibration by Armstrong Monitoring
4. Training by Armstrong Monitoring
5.1 On Site Calibration equipment required
For qualified personnel, the following is a recommended list of calibration equipment required.
A digital multi-meter with ranges of 20.0mA or greater.
A calibration jack plug type test lead for the above meter (provided by AMC)
Zero & Span gases for use with a 0.5lpm flow regulator (contact AMC for information)
Cal Adapter, P/N: AMC-FL1 or AMC-C1-FL1 for calibration kit
5.2 CALIBRATION PROCEDURE
The transmitter is equipped with a remote calibration feature allowing for one-man calibration at
the transmitter location. The transmitter output is measured using a digital multimeter set to mA
scale, with a cal jack plug connected to the cal jack (J1), see Fig 5-1. When using the cal jack,
signal to the monitor is interrupted and will instead be shown in mA on the multimeter connected
to the cal jack (J1). The analog output range corresponding to the Factory Calibration (Section
2.3) is 4-20mA.
Warning:
The calibration procedure will cause signal loss to the monitor.
precautions may be required.
13
For highly demanding
Appropriate