Technical Specifications - Hach LANGE si628 P Bedienungsanleitung

1. Technical Specifications

Measuring ranges
pH –2.00 to 16.00
mV –1500 to 1500
°C –20.0 to 150.0
Measurement error
≤ 0.02 pH, ≤ 1 mV, ≤ 0.5 °C (± 1 digit)
Reproducibility
± 0.01 pH, ± 1 mV, ± 0.1 °C (± 1 digit)
Automatic temperature compensation
With temperature probe Pt 1000 or by keypad
pH calibration options
Default access password: 100
With 2 standards, pH 7 and 4 or pH 7 and 9.2
Redox calibration options
Default access password: 100
With 1 standard, 220 mV at 25 °C
Automatic buffer recognition
Technical (at 25 °C) pH 4.01, 7.00 and 9.21
Criteria to accept calibration
Slope 85 to 103 %. Asymmetry potential ≤ 60 mV
Control mode
ON/OFF
2 relays programmable as minimum and maximum
Activation relays lag, 2 seconds
Minimum programmable hysteresis 0.1 pH, 1 mV
Language
English, German, Spanish, French, Italian,
Portuguese
Keypad
LCD, alphanumeric, backlit,
2 lines of 16 characters
Inputs and outputs
Electrode, BNC connector
A.T.C., Pt 1000, plug-in screw connector
Analogic signal, galvanically isolated
2 limit relays, free of potential. Contact N/O
• 4 to 20 mA for measurement (R max.= 500 Ω)
• 21 mA hold
• 22 mA alarm
si628 P_HACH_LANGE_Ed.0510.indd ANG:3 si628 P_HACH_LANGE_Ed.0510.indd ANG:3
Relays
2 limit relays, free of potential. Contact N/O
Maximum load:
in AC < 24 V / < 3 A / < 72 VA
Maximum cable length
≤ 25 m
Power supply
230 or 24 VAC ±10 %, 45-65 Hz,
(115 VAC under demand)
Consumption 4 VA
Protection: Class II
Overvoltage category: II
EC Directives
Electrical security according to 2006/95/EC
Electromagnetic compatibility according to
2004/108/EC
Environmental conditions
Working temperature: 0 to 50 °C (32 to 122 °F)
Storage temperature: –20 to 65 °C (–4 to 149 °F)
Relative humidity < 80 % (non condensing)
Max. height 2.000 m. at 230 V; 3.000 at 24 V
Enclosure
si628 P (wall mount): Thermoplastic material,
protection IP55. Flame rating HB
si628 P (panel mount): Noryl, protection IP54
Flame rating FV-1
Weight
si628 P (wall mount): 700 g
si628 P (panel mount): 600 g
Dimensions
si628 P (wall mount):
105 x 170 x 100 mm (4 x 6.7 x 3.9 in.)
si628 P (panel mount):
96 x 96 x 100 mm (3.8 x 3.8 x 3.9 in.)
Warranty
Instruments: 2 years
Specifications are subject to change without
notice.
3
20/5/10 11:24:16 20/5/10 11:24:16