Hach SP-51 Manual Básico Del Usuario página 4

Specification
Hard water alarm relay
Contact rating
Operating temperature
Storage temperature
Operating humidity
Sampling rate
Sample flow rate to sample
conditioning
Inlet pressure to instrument
Inlet pressure to sample
conditioning
Inlet fitting
Drain fitting
Sample temperature range
Certifications
Warranty
Trip point specifications
Alarm trip point Minimum trip
value
0.3 mg/L 0.22 mg/L
1 mg/L 0.75 mg/L
2 mg/L 1.5 mg/L
5 mg/L 3.75 mg/L
10 mg/L 7.5 mg/L
20 mg/L 15.0 mg/L
50 mg/L 37.5 mg/L
100 mg/L 75.0 mg/L
Section 3 General information
In no event will the manufacturer be liable for direct, indirect, special, incidental or consequential
damages resulting from any defect or omission in this manual. The manufacturer reserves the right to
make changes in this manual and the products it describes at any time, without notice or obligation.
Revised editions are found on the manufacturer's website.
4 English
Details
SPDT relay, set to on when the hard water indicator is on.
The alarm can be disabled.
5 A resistive at 100–240 VAC
5 to 40 °C (32 to 104 °F)
-40 to 60 °C (-40 to 140 °F)
Relative humidity: 5–95% at different temperatures, non-
condensing
New sample: every 1.9 minutes ±5% at 60 Hz; 2.3 minutes
±5% at 50 Hz
50 to 500 mL/minute flow rate necessary (250 mL/minute
recommended)
1 to 5 psig (0.07 to 0.34 bar), 1.5 psig (0.1 bar) is optimum, >
5 psig (0.34 bar) can cause sample tubing failure
1.5 psig to 75 psig (0.1 to 5.2 bar)
At instrument, 6.35 mm (0.25 in.) OD polyethylene tubing
with quick-disconnect fitting
Hose barb for 12.7 mm (0.5 in.) ID flexible tubing
5 to 40 °C (41 to 104 °F)
CE, cETLus
1 year (EU: 2 years)
Maximum trip value Temperature influence on trip
0.38 mg/L
1.25 mg/L
2.5 mg/L
6.25 mg/L
12.5 mg/L
25.0 mg/L
62.5 mg/L
125.0 mg/L
point
–0.03 mg/L per °C
–0.03 mg/L per °C
–0.03 mg/L per °C
–0.06 mg/L per °C
–0.08 mg/L per °C
–0.09 mg/L per °C
–0.29 mg/L per °C
–0.60 mg/L per °C