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1.3 ORDERING INFORMATION Model pH/ORP Sensor is housed in a PES body suitable for insertion, submer-
sion or flow through installation. The sensor includes an integral preamplifier, measuring electrode, double junc-
tion gel-filled reference cell, automatic temperature compensation for pH, and a choice of two cable lengths of
either 15 ft. or 50 ft. (4.5 or 15.2 m).
MODEL 381 INSERTION, SUBMERSION, FLOW THROUGH SENSOR
CODE FUNCTION
pH Requires Code 30
ORP Requires Code 32 (not for use with 1054/1054A ORP Series)
pHE Requires Code 31 (for use with 1054/1054A/2054 Series and 2081)
381 pH 00 10 20 30 40 51 EXAMPLE
MODEL 381 pH/ORP SECTION 1.0
DESCRIPTION AND SPECIFICATIONS
CODE MEASURING ELECTRODE
10 General purpose pH
11 High pH Electrode, requires Code 21. For sodium concentrations greater than 1% or
continuous measurement above 11 pH.
12 Ruggedized pH Electrode. For abrasive solutions.
13 Platinum ORP Electrode.
14 Gold ORP Electrode.
15 HF pH Electrode. For HF concentrations less than 100 ppm.
CODE LIQUID JUNCTION
20 Wood/KYNAR Liquid Junction
21 Ceramic/KYNAR Liquid Junction
CODE CABLE
40 15 ft. cable for integral sensor preamp
41
15 ft. coax cable w/BNC connector for remote sensor preamp
and integral analyzer preamp (1054A-54/2054-54 only)
42 15 ft. coax cable w/o BNC connector for integral analyzer
preamp (1054, 1181-43/44 & 2081-05 only)
43 50 ft. cable for integral sensor preamp
CODE INTEGRAL PREAMPLIFIER
50 Preamp for Models 1181 pH/ORP & 1050/1060
51 Preamp for Models 1003/1023
52 Preamp NOT REQUIRED
54
Preamp for Models 1054/2054 Series, and 2081
CODE TEMPERATURE COMPENSATION
30 Automatic T.C., 3.0K ohm. For Models 1003, 1050 & 1181 pH
31
Automatic T.C., PT-100. For Models 1054/2054 Series, and 2081
32
Automatic T.C., NOT REQUIRED (For Models 1023, 1060 and 1181 ORP)
CODE INSTALLATION
02 Submersion
03 Flow Through
04 Flow Through with Flow Powered Cleaner (not available with ORP)