Electro-Chemical Devices (ECD) SMS22 - Manual (Page 12)

pH Compensation:
pH 11 - 14 (accuracy degrades rapidly below 11 pH)
Display:
2.5” X 1.75” backlit LCD, 4 lines for Text & Graphical
Enclosure:
NEMA 4X, LxWxD: 5.7” x 5.7” x 7
Outputs:
(1) 4-20 mA for Sulfide set to Sensors Range, user configurable
(1) 4-20 mA for pH set 0-14 pH, user configurable
Alarm Relay Ratings:
(4) SPDT 230 VAC/5A or 30 VDC / 5A resistive max.
Input Power
110/220 VAC @ 50/60 Hz
24 VDC (12 to 50 VDC) @ 1.5 A
Display
Lascar 4-20 mA loop Powered indicator
Model: DPM 742-BL
SMS-22 Page 3