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2 Description and Specifications
tanks, or ponds. The 389VP is suitable for virtually all applications and is compatible with
Rosemount Analytical and other manufacturers’ instruments.
Installation is easily achieved through the wide variety of mounting configurations. 389VP features
a 1 inch (MNPT) front and rear facing connections for insertion, submersion, or flow-through pH
and ORP applications.
Performance and Physical Specifications
Sensor Type: Triple-junction 389VP
Range: pH: ACCUGLASS 0-14*
ORP: -1500 to +1500 mV
Temperature Range: 0° to 85°C (32° to 185°F) Automatic temperature compensation 0° to 85°C
(32° to 185°F), Temperature compensation is not required for 389 ORP or 389VP ORP when used
with 1060, 1023 or 1181 ORP
Maximum Pressure:
790 kPa [abs] (100 psig) at 65°C (150°F) - see Graph A
Materials of Construction: Tefzel, glass, ceramic and Viton
Process Connections: 1 in. MNPT, 2 places
Cable: must use mating VP cable, PN 24281-00
Weight/Shipping Weight: 0.45 kg/0.9 kg (1 lb/2 lb)
S
ection 1: Description and specifications 389VP Instruction Manual
January 2013 PN 51-389VP
1.2
*Percent Linearity Over pH Range:
Option 10 Option 11
0-2 pH 94% 94%
2-12 pH 99% 97%
12-13 pH 97% 98%
13-14 pH 92% 98%