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3.3 Input/output data
The pump offers various input and output options, depending on control variant.
Signal input
Voltage in level sensor input [VDC]
Voltage in pulse input [VDC]
Minimum pulse-repetition period [ms]
Impedance in analog 0/4-20 mA input [Ω]
The analog input requires a signal which is isolated from frame.
Min. resistance to frame: 50 kΩ
Maximum loop resistance in pulse signal circuit [Ω]
Maximum loop resistance in level signal circuit [Ω]
Signal output
Maximum load of alarm relay output, at ohmic load [A]
Maximum voltage, alarm relay output [V]
3.4 Approvals
Approvals
NSF61 is only valid for DME 375 and DME 940
standard range (without spring loaded valves).
Certification is based upon a dose rate that yields a
sodium hydroxide (NaOH) concentration in potable
water that does not exceed 200 mg/L.
Certification is based upon a dose rate that yields a
sodium hypochlorite (NaOCl) concentration in potable
water that does not exceed 84 mg/L.
Certification of this product has been performed to the
health effects requirements of NSF/ANSI Standard
61, which assesses the acceptability of potential
extractants from the chemical pump. No evaluation
has been performed on the strength or efficacy of the
chemical fed. The specified chemicals are not
certified by UL to NSF/ANSI Standard 60, so the
operation, maintenance and the consistency of the
source ingredients may affect the performance of the
dosing pump.
3.5 Dimensions
See dimensions at the end of these instructions.
All dimensions are in mm.
CE, CSA-US, EAC,
NSF61
5
5
3.3
250
250
250
2
42
11
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