Myron L 729II - Manual (Page 10)

LINEARITY
Electronics: ±0.05% (±0.01pH units / ±1mV of full scale)
RESOLUTION
Digital Display: ±0.01 pH units / ±1mV
Analog Meter: ±0.13pH units / ±40mV
SENSITIVITY
0.05 % of full scale (0.01pH units / 1mV)
STABILITY
±0.05 % of full scale (±0.01pH units / ±1mV)
REPEATABILITY
±0.05 % of full scale (±0.01pH units / ±1mV)
CALIBRATION CHECK
Built in (7 & 0 pH / 0 & -2000mV)
RECORDER OUTPUT
Isolated 0-10 VDC @ 5mA max. (linear); standard on all
models
OUTPUT IMPEDANCE
100Ω ±5%
SENSOR INPUT
1 (optional 3 sensor Input available)
NOTE: pH and ORP may NOT be mixed.
CONTROL FUNCTIONS
Models 722II, 723II & 727II, 728II:
Single set point alarm/control continuously adjustable
0-100% of span
Second set point alarm/control (Optional).
Continuously adjustable - 0-100% of span
Hysteresis
Adjustable from 0.3-3 % of full scale
Indicators
“HIGH” (red) and “LOW” (green) set point LEDs - reversible.
Relay Contact Rating
SPDT 10 amp @ 250 VAC, 30 VDC. Relay operates
increasing or decreasing reading (user selectable).
Solid State Output
24VDC unregulated, 30mA Maximum.
Powers optional PA - Piezo Electric Alarm, RA™ - Remote
Alarm, or customer alarm within above limits.
Second Alarm/control Module, with above specifications, opt. on
Models 722II, 723II & 727II, 728II:
POWER SPECIFICATIONS
115/230 VAC ±15%, 50/60 Hz (User selectable)
overvoltage category II
100 mA Maximum Current
Double Insulated (with circuit board ground for OEM operation)
Fuse - 100mA Slow Blow (T.10A) for both 115 & 230 VAC (V~)
User replaceable
Humidity - 20-90% non-condensing
Max. Altitude -
40,000 ft/12,000 meters non-operating
10,000 ft/3000 meters operating
Pollution degree 2
24 VAC or 24 VDC Option available on Special Order
Overvoltage category II (24 VAC)
250 mA Maximum Current
Double Insulated (with circuit board ground for OEM operation)
Fuse - 250mA Slow Blow (T.25A) User replaceable
AMBIENT TEMPERATURE RANGE
32°F to 140°F ( 0°C to 60°C)
DIMENSIONS
6.0” (152mm) H x 4.8” (122mm) W x 3.8” (96mm) D
HOUSING CONSTRUCTION
Fully gasketed heavy-duty ABS for splashproof and corrosion
resistance.
Rated IP65/NEMA 4X
Double Insulated
WEIGHT
720 Series II: average 2 Ibs. (0.9 kg)
C. OPTIONAL FEATURES
-SC Second Alarm/control Module (M/c models only)
-4A 4-20 mA Isolated output (Digital & OEM only)
-PA 70 db Piezo Electric Alarm (digital M/c models only)
-PAT Piezo Alarm & Timer Module (digital M/c models only)
-35BL 3 1/2 digit backlit LCD
-TP Temperature Module Requires -TP sensor
(Digital Models Only)
-TH Alarm/control Interface Harness (requires SC & TP)
-PC 115 VAC Powercord (8 ft. with USA plug and strain
relief) - NOT for use with 230 VAC.
-24VA 24 VAC isolated power supply (special order)
-24VD 24 VDC isolated power supply (special order)
-PTST Panel mounted ZERO (7pH or 0mV) Test switch
(special order)
D. ACCESSORIES (ordered separately)
SCO Second Alarm/control Module (M/c models only)
4AO 4-20 mA Isolated output (Digital & OEM only)
3SO 3 Sensor Input Switch Module with
3 foot/1 meter cable*.
3SE 3 Sensor Input Switch with enclosure.
PAO 70 db Piezo Electric Alarm only (723II/728II)
PATO Piezo Alarm & Timer Module (723II/728II)
35BLO 3 1/2 digit backlit LCD w/Bezel
TPO Temperature Module Requires additional ITS1
sensor (Digital Models Only)
THO Alarm/control Interface Harness
(requires SCO & TPO)
PCO 115 VAC Powercord (8 ft. with USA plug and strain
relief) - NOT for use with 230 VAC.
SMP50 Surface Mounting Plate
RA Remote Alarm - RA™ (controller models only)
VR Powersupply, 24 VAC, 20VA (115 VAC, indoor use)
024-1 24 VAC 1” Solenoid Valve
720SS pH/ORP Sensor Substitute (NIST Traceable)
pHC NIST Certificate without Sensor
pHCS NIST Certificate with Sensor in Buffer Solutions
OC NIST Certificate without Sensor
*Customer mounted separately
6
DOUBLE INSULATED