Xylem H-3551 - Manual (Page 33)

Appendix A
Specifications
H-3551
Specifications A-1
Environmental
Standard Operating Range: -40° to 60° C
Storage: -50° to 80° C
It is recommended the H-3551 be installed in a weather
shielded enclosure (gauge station).
Gas Delivery
Control System: Microprocessor controlled
Technology: Constant mass flow
Gas Flow Control: Bubble rate is user selectable from
30 to 120 bubbles per minute.
Built-in auto zero compensation
No needle valve
(patent application in process)
Compressor
Type: HI-REL medical grade ISO 9003
qualified piston compressor
(avoids broken diaphragm problems)
Serviced for extended temperature
operation
Operation: Low duty cycle
5 hours typical runtime per year at 60
bubbles per minute
Pumping Time: 1-second (average)
Purge Functions
Purge Pressure: User Selectable 15 PSI to 80 PSI
Options: 1. Manual
2. Internally sensed
3. Automatic timed interval
4. Remote controlled
Control Interface
Type: RS-485
Protocol: ASCII
Baud Rate: 9600 bps, half-duplex, 8 bit, no parity,
1 stop bit
Power
Qualified for operation with a 12-volt battery
Two supply inputs:
1. Electronics supply via the RS-485 cable
2. Compressor supply
Voltage 10 to 16 volts
Current: 15 milliamperes average (@ 60 bub/min)
Max Current: 3.0A (pump running)
Physical
Enclosure: Corrosion resistant, Type 4X
Molded fiberglass
Hinged cover
Seamless foam-in-place gasket
Size: 10.5 in. wide x 12.5 in. long x 6.0
in. deep
Weight: 12 pounds
Mounting: Hardware supplied for wall
mounting
Pressure Outlet: 1/8 in. FNPT
Sensor Pressure Outlet: 1/8 in. FNPT
Air Intake: 1/8 in. FNPT
Pressure relief valve: Internal
Ordering Information
H3551 Base model
H3551/000 Standard H355 "Smart-gas" system
H3551/350 Combination H3551 "Smart-gas" system and H350
pressure measurement system
Warranty
The W ATER LOG ® H-3551 is warranted against defects in
materials and workmanship for one year from date of shipment.
Notes
Specifications subject to change without prior notice due to
ongoing commitment to product testing and improvement.