Section 1: Specifications; Specifications - Emerson Rosemount 3900 Instruction Manual

Instruction Manual
LIQ-MAN-3900

Section 1: Specifications

1.1

Specifications

Measurements and Ranges: pH : 0-14 / ORP: -1500 to +1500 mV
Percent Linearity Over pH Range:
Materials of construction:
Sensor Body: Ryton -- polyphenylene sulfide (PPS)
O-ring: EPDM
pH Electrode: Glass
ORP Electrode: Glass, platinum
Solution Ground: Stainless Steel
Reference Junction: PTFE (Teflon)
Maximum Pressure: 790 kPa [abs] (100 psig) at 212 °F (100 °C)
CRN rating: 60 psig up to 212 °F (100 °C).
Operating Temperature: 14 °F to 212 °F (-10 °C to 100 °C)
Automatic temperature compensation 14 °F to 212 °F (-10 °C to 100 °C)
Conductivity: Responds to changes in pH at a minimum conductivity of 0.1µS/cm when used
with the low flow cell panel. The sample flow rate must be controlled to 2 gph (7.6L/hr).
Process Connections:
Front facing: 3/4 inch and 1 inch MNPT
Rear facing: 1 inch MNPT
Weight/Shipping Weight: 1 lb./2 lb. (0.45 kg/0.9 kg)
Integral Cable: 32 ft (10m) cable with integral preamp; 15 ft (4.7m) cable without preamp
VP8 Cable: Use 24281-XX, 2.5 ft (0.8m) to 100 ft (31m) (see accessories)
NOTICE
The Rosemount 3900/3900VP Sensor responds to changes in pH at a minimum conductivity of
0.1 S/cm in deionized water. Sample flow rate must be controlled to 2 gph (7.6L/hr). The offset is
approximately -0.2 pH after 3 months at ambient temperature.
Specifications
Range
0-7
1-7
4-7
7-10
7-12
7-13
7-14
Section 1: Specifications
April 2017
Linearity
97%
98%
98%
99%
97%
96%
95%
1