Models 716.11, 736.11

Differential Pressure Gauges For Low Pressure Measurements

Type 716.11 - Copper Alloy System
Type 736.11 - Stainless Steel System

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Applications

  • Differential pressure measurement at measuring points with very low differential pressures, for gaseous, dry, clean, oil and grease free media
  • Model 736.11 also for aggressive media and environment
  • Filter monitoring in ventilation and heating systems
  • Filter monitoring in overpressure and clean rooms
  • Differential pressure controlled monitoring of ventilator and blast pressures

Product Features

  • Differential pressure measuring ranges from 0... 1" H2O (2.5 mbar)
  • As a standard zero adjustment in front
  • Ingress protection NEMA 4 (IP 66)
  • Case from stainless steel

Description

Design
For very low differential pressures, DT - GM 97 10 226

Nominal sizes
Model 716.11: 2½”" (63 mm), 4" (100 mm), 6" (160 mm)
Model 736.11: 4" (100 mm), 6" (160 mm)

Accuracy
±1.6% of full scale value

Scale Ranges
Model 716.11:
2½": (63 mm): 0...6" H2O (16 mbar) to 0...160" H20 (400 mbar)
4": (100 mm): 0...4" H2O (10 mbar) to 0...100" H20 (250 mbar)
6": (160 mm): 0...2.5" H2O (6 mbar) to 0...100" H20 (250 mbar)

Model 736.11
Size 4" (100 mm): 0.6" H20 (16 mbar) to 0...100" H2O(250 mbar)
Size 6" (100 mm): 0...1" H20 (2.5 mbar) to 0...100" (250 mbar)
or all other equivalent vacuum or compound ranges

Pressure limitations
Steady: full scale value
Fluctuating: 0.9 x full scale value

Overpressure Safety
Full scale value

Max. working pressure (static pressure)
Size 2½" (63 mm): 160" H2O NS 63: (400 mbar)
Size 4" & 6" (100 mm & 160 mm): 100" H2O

Permissible Temperature
Ambient: -4°F...to 140°F (-20°C +60°C)
Medium: + 158°F (+70°C) maximum

Temperature error
Additional error when temperature changes from reference temperature of 68°F (20°C) ± of span 0.4% for every 18°F (10°K) rising or falling.

Ingress Protection
IP 66 per EN 60529 / IEC 60529

Process connection (wetted)
Model 716.11: Copper alloy
Model 736.11: Stainless steel
Lower mount (LM), parallel one behind the other
Size 2½” (63 mm): 2 x 1/8" NPT (male), 14 mm wrench flat
Size 4" & 6" (100 mm, 160 mm): 2 x ½” NPT (male), 22 mm wrench flat

Pressure element (wetted)
Model 716.11: Copper alloy
Model 736.11: Stainless steel

Movement (wetted)
Model 716.11: Copper alloy
Model 736.11: Stainless steel

Dial (wetted)
Aluminum, white, black lettering

Pointer (wetted)
Aluminum, black

Zero adjustment (wetted)
Adjusting device for screwdriver in front

Case (wetted)
Stainless steel, pressure retaining,
Size 4" & 6" (100 mm & 160 mm): with pressure relief disc

Window (wettted)
clear non-splintering plastic

Sealings (wetted)
NBR, silicone

Bezel ring
Bayonet type, stainless steel

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