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Differential pressure transmitter 698
The pressure modules of Type 698 are specially designed for monitoring airflows and differential pressures in HVAC systems and laboratory environments. The module is optionally available with a 3-digit display, two potential-free limit switches, and a square-root extraction.
- Rugged sensor thanks to excellent synergy of membrane technology and ceramic elements
- High overpressure safety even in the smallest pressure range
- Easy installation and commissioning
- Maintenance-free
- High protection class
Differential pressure transmitter 698
Product feature
Pressure measuring range
-1 ... 0 bar (Relative); 0 ... 10 bar (Relative)
Pressure measuring range
-5 ... 5 mbar (Difference); 0 ... 500 mbar (Difference)
Response time
<20 ms
Load change
<10 Hz
Display
LED, 3-digit
Sensor weight
440 g (Version 24 VDC); 640 g (230 VAC version)
Field of application
Media
Air; neutral gas
Medium temperature
0 ... 70 °C
Permissible overload on one side
100 mbar
Bursting pressure
200 mbar
Bursting pressure
5 x FS; 3 x FS (max. 14 bar at 20 °C and max. 7 bar at 70 °C)
Permissible overload on one side
3 x FS (max. 14 bar at 20 °C and max. 7 bar at 70 °C)
Ambient condition
Ambient temperature
-10 ... 70 °C
Storage temperature
-40 ... 70 °C
Material
Housing with media contact
PA; PC; Ultem
Sensor with media contact
Ceramic Al2O3 (96 %); Silicon
Pressure connection with media contact
PVC
Connecting hose with media contact
Silicone; PA
Membrane with media contact
Silicone; Ceramic Al2O3 (96 %); Silicon
Sealing material with media contact
NBR
Electrical data
Permissible load
>2 kOhm
Permissible load
<500 Ohm
Inverse-polarity protection
Each connection against each other with max. supply voltage (Extra-low voltage); 230 VAC / 115 VAC only at Power supply terminal, transformer short-circuit-proof (Low voltage)
IP protection class
IP 65
Limit switch
Two changeover contacts potential-free and adjustable over the entire range (adjustment via potentiometer).; 250 VAC / 6A (Contact load); ~ 1 % FS fixed (Switching hysteresis)
Electrical connection
Screw terminals for 1.5 mm2
Installation guide
Installation orientation
any (Position error for versions with final value < 50 mbar = 0.13 mbar)
Assembly
Mounting holes integrated in the housing
Approval
EMC compatibility
CE-compliant in accordance with EN 61326-2-3
Differential pressure transmitter 698
Differential pressure transmitter 698
Download the product-specific technical documents here in the language of your choice or open it in a new window . You can find all product and business-relevant documents on our central download page
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EN-GB
Data Sheet 698
Data Sheet
PDF
EN-GB
FR
DE
Operating Instruction 698
Operating Instruction
PDF