Hach-Lange ISENH318103 User Manual - Manual

User Manual
DOC022.5 2.80107
Ammonia Probe: Model ISENH318101 or ISENH318103
Safety information
Precautionary labels
Read all labels and tags attached to the instrument. Personal injury or damage to the
instrument could occur if not observed. A symbol on the instrument is referenced in the
manual with a precautionary statement.
Electrical equipment marked with this symbol may not be disposed of in European public disposal systems after
12 August of 2005. In conformity with European local and national regulations (EU Directive 2002/96/EC), European
electrical equipment users must now return old or end-of-life equipment to the Producer for disposal at no charge to
the user.
Note: For return for recycling, please contact the equipment producer or supplier for instructions on how to return end-of-life
equipment, producer-supplied electrical accessories, and all auxiliary items for proper disposal.
Specifications
Note: Specifications are subject to change without notice.
Specifications Details
Probe type Digital combination gas-sensing probe with a refillable outer body, double-
junction reference and a built-in temperature sensor
Range 0.01 mg/L (5x10 -7 M) to 14,000 mg/L (1 M) as NH
3
-N
Sample pH range > pH 11 per Ammonia ISA
Linear region 0.5 mg/L to 14,000 mg/L as NH
3
-N
Slope 57 mV/decade (90 to 110% in linear range at 25 °C (77 °F) per Nernstian
theoretical value)
Operating temperature range 5 to 50 °C (41 to 122 °F)
Storage temperature range 5 to 35 °C (41 to 95 °F)
Junction Double junction (annular)
Reference type Ag/AgCl
Fill solution 3 M KCl gel (non-refillable), 0.1 M NH
4
Cl (outer body, refillable)
Membrane Replaceable Hach ISENH3181 Ammonia membrane module
Response time in linear region < 60 seconds (application dependent)
Minimum sample volume 15 mL
Minimum immersion depth 25.4 mm (1 in.)
Dimensions Diameter: 12 mm (0.47 in.)
Length: 175 mm (6.89 in.)
Cable length: 1 or 3 m (3.28 or 9.84 ft)
Cable connection M12 digital output and connector compatible with HQd meters
Product overview
The ISENH318101 or ISENH318103 probe is a digital combination gas-sensing electrode
with a refillable outer body, double-junction reference and built-in temperature sensor
(
Figure 1 ). The probe is available with a 1 or 3 m (3.28 or 9.84 ft) cable and is intended
for laboratory use. The probe measures ammonia concentration in water samples.
1