Connecting Electrodes
The meter is designed to use only one electrode at a time. The meter
automatically identifies whether a BNC or ISFET probe is attached when the
meter is first turned on. Always turn off the meter when changing electrodes.
CAUTION: Do not operate meter with both an
ISFET and a BNC probe attached.
1. ISFET pH Probe Connector.
The IQ150 Dual Technology pH meter accepts ISFET non-glass pH
electrodes. The temperature sensor is built-in to the ISFET probe so a
separate temperature probe is not required
2. Temperature Probe Connector for use with BNC Electrodes.
The temperature probe uses a 3.5 mm phono jack. When a temperature
probe is connected, the meter will Automatically Temperature
Compensate (ATC) pH values. Use only 30KÙ thermistors. Contact IQ
Scientific Instruments for temperature probes or pH electrodes with built-
in temperature sensors.
3. BNC Connector for Electrodes.
The IQ150 Dual Technology pH meter accepts any pH, ORP, or Ion
Selective Electrode with BNC connector. Be sure that both the
receptacle on the meter and the connector on the probe are clean and dry;
wet or dirty connections may cause unstable readings.
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