Thermo Fisher Scientific ECFP21A1A1 Differential pH Sensor - Manual (Page 8)

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2.2 Specifications
Wetted Materials……………………………. Sensor Body - CPVC
Salt Bridge Junctions - Kynar®
pH Electrode - General glass
Ground Rod - 316 Stainless Steel
O-Ring Seals - Viton®
(Consult factory for customized material construction)
Operating Temperature…………………….. -5
°C to 95°C (23°F to 203°F)
Maximum Pressure…………………………. 100 psi @ 100
°C (100 psi @ 212°F)
Maximum Flow Rate………………………... 3 m/sec (10 ft/sec)
Measuring Range…………………………… 0 to 14 pH
Resolution……………………………………. 0.01 pH
Standard Sensor Cable Length……………. 3 m (10 ft)
Cable Wire Colors…………………………... White Wire (-5V)
Black Wire (Ground)
Red Wire (pH Electrode/Active(Measure))
Green Wire (Reference Electrode)
Yellow Wire (Temperature/NTC 300)
Drain/Shield (Earth)
Maximum Transmission Distance…………. 914 m (3,000 ft)
The sensor will arrive with a protective cap that keeps the sensor hydrated.
For short-term storage, put several drops of Eutech Instruments’ storage solution on the
absorbent material in the protective cap and replace the cap on the sensor. This keeps
the process electrode and salt bridge moist.
For extended storage, repeat the above short-term storage procedure every 2 to 4
weeks, depending on the surrounding environmental conditions.
Make sure all wetted materials are compatible with process chemicals at operating
temperatures and pressures.