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MODEL 1181pH/ORP
1.3 PHYSICAL SPECIFICATIONS - GENERAL
Enclosure: NEMA 4X, weatherproof and corrosion-resistant
NEMA 7B, explosion proof
Hazardous Area Classification:
Explosion Proof:
FM:
Class I, Groups B, C, & D, Div. 1
Class II, Groups E, F, & G, Div. 1
Class III
60°C Maximum
CSA:
Class I, Groups C, & D,
Class II, Groups E, F, & G
Class III, Encl 4
Class I, Groups A, B, C, & D, Div. 2
Encl 4, Factory Sealed
Intrinsic Safety:
FM:
Class I, II, & III, Div. 1
Temperature Code T4
CSA:
Class I, Groups A, B, C, & D, Encl 4
Temperature Code T4
CENELEC: Ex ia IIB T4 (Tamb = 55°C)
1.4 MODEL 1181pH TRANSMITTER
mitter measures over the full range of 0-14 pH. The 4-20 mA isolated out-
put may be field calibrated to represent any 2 to 14 pH span. Two
digital displays are offered with the 1181pH. The Code 04 LCD display
receives its input from the pH preamplifier. The advantage of the Code
04 display is that it will continue to display the measured pH regardless
of the calibrated output. The Code 06 LCD display and the analog dis-
play receive their input from the 4-20 mA loop current and will display
pH to the calibrated output only.
The 1181pH Transmitter is available with an integral preamp. The
Code 43 integral preamp is for use with sensors having a PT100 tem-
perature compensator and the Code 44 internal preamp is for use with
the Rosemount Analytical standard 3K temperature compensator. An
integral preamp is not compatible with the Code 04 LCD display and
Code 02 Blind. These options require a Tall Housing Cover (P/N
3002468). The maximum recommended distance between the sensor
and integral preamp is 15 feet (4.5 meters).
PERFORMANCE SPECIFICATIONS @ 25°C
(Electronics only)
Measurement Range: 0-14 pH
Internal Range Select: Any 2 to 14 pH span in one pH steps
Accuracy: ±0.1% F.S.
Stability: ±0.1%/month
Repeatability: ±0.1 pH
Temperature Coefficient: +0.0028 pH/ÞC F.S.
Automatic Temperature Compensations: 0-100ÞC
RECOMMENDED SENSORS:
Model 300 Retractable pH Sensor
Model 320B Flow Through pH Sensor
Model 320HP High Purity pH Sensor
Model 328A Steam Sterilizable pH Sensor
Model 381 Insertion/Submersion/Flow pH Sensor
Model 385 Retractable pH Sensor
Model 389 Disposable ORP Sensor
Model 396 TUpH Disposable Sensor
Model 399 Disposable pH Sensor
The Model 1181 pH Trans-
DESCRIPTION AND SPECIFICATIONS
Display:
Analog: plug in, 90 degree, 2.5 inch diameter
1181pH:
dual scale, 0-100% & 0-14pH
1181ORP: dual scale, 0 center, ±1.0 & 0-100%
1181C:
single scale, 0-100%
1181T:
single scale, 0-100%
1181DO:
triple scale, 0-5, 0-10, 0-20 ppm
1181PB:
triple scale, 0-5, 0-10, 0-20 ppb X10
1181SO:
triple scale, 0-100, 0-200, 0-800 mm Hg
1181RC:
triple scale, 0-5, 0-10, 0-20 ppm
Digital: 3.5 digit, LCD, adjustable range in engineering units
Recommended Cable: Transmitter to Power Supply
Two Wire, 18 AWG, shielded, Belden 8760
or equal (Rosemount Analytical P/N 9200001)
Weight/Shipping Weight:
1181pH, ORP, DO, PB, SO, RC, CL:
Blind: 1.44 kg/1.89 kg (3.18 lbs/4.18 lbs)
Analog/Digital: 2.15 kg/2.6 kg (4.74 lbs/5.75 lbs)
1181C, T:
Blind: 1.8 kg/2.25 kg (4.0 lbs/5.0 lbs)
Analog/Digital: 2.48 kg/2.93 kg (5.5 lbs/6.5 lbs)
1.5 MODEL 1181ORP TRANSMITTER
ORP Transmitter measures over the range of ±1200 mV. The 4-20
mA isolated output may be calibrated to represent any 200 to 2400
mV range.
PERFORMANCE SPECIFICATIONS @ 25°C
Measurement Ranges Span: 200 mV to 2400 mV in 200 mV steps
Zero: 0 to ± 1200 mV in 200 mV steps
Accuracy: ±0.1% full scale
±2.0 mV full scale
Stability: ±0.1% F.S./month
±2.0 mV/month non-cumulative
Repeatability: ±2.0 mV/month
±0.1% full scale
Temperature Coefficient: ±0.4 mV/°C F.S.
±200 ppm/°C full scale
Automatic Temperature Compensations: N/A
RECOMMENDED SENSORS:
Model 300 Retractable ORP Sensor
Model 330B Flow Through ORP Sensor
Model 381 Insertion/Submersion/Flow ORP Sensor
Model 385 Retractable ORP Sensor
Model 389 Disposable ORP Sensor
Model 399 Disposable ORP Sensor
SECTION 1.0
The Model 1181
3
- Quick Links:
- Model 1181Ph Transmitter
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