Analytical Measurement - Nuova Elva

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JUMO GmbH & Co. KG • 36035 Fulda, Germany Data Sheet 20.2630 Page 11/12 Flow-monitoring assembly Consisting of: Flow monitor Sales No. 20/00396471 and Fitting for flow monitor Sales No. 20/00396470 Operation For proper operation, the incident flow of the sample liquid on the cell must be at least 15 cm/sec. Below this minimum flow velocity, the cells will indicate values that are too low. This may cause a connected control system to apply a dangerous over/underdose. Above this minimum, the measurement signal will only be slightly affected by the incident flow velocity. Flow monitor Fitting for flow monitor Flow direction Electrical connection for flow monitor 2 Connector 4-pole 3 4 1 3 - br gn signal wh NO NC C 1 4 The minimum incident flow velocity of 15 cm/ sec can be monitored by means of the flow monitoring assembly. The flow monitoring assembly consists of a flow monitor and the appropriate fitting. The flow monitoring assembly is installed in line with the flow-through fitting. On reaching, or exceeding, the minimum flow velocity, a contact in the terminal head of the flow monitor will switch. This contact can then be used to operate, for instance, one logic input of the JUMO dTRANS Az 01 (microprocessor indicator /controller for analytical measurement). With insufficient incident flow, the JUMO dTRANS Az 01 is set to “HOLD”, thereby avoiding an incorrect dosage. Shut-off valve G 1/4 threaded hose connection, dia. 8 x 6 mm Application example Connection example of the cell and the flow monitor to the JUMO dTRANS Az 01 (microprocessor indicator/controller for analytical measurement) 17 19 20 22 18 21 23 L1 (L+) N (L-) TE 16 15 14 13 11 9 7 12 10 8 4 + - 5 6 4 1 2 3 1 Measuring cell Flow monitor 3 Terminal assignment for the JUMO dTRANS Az01 Terminal Connection 2 + 3 - Supply for 2-wire transmitter 18 V DC 7 - 8 + Input for standard 4 — 20 mA signal 13 19 Logic input 1 (e.g. for flow monitoring) Operation Above a flow velocity of 15 cm/sec, the contact (3+4) of the flow monitor is opened. When the contact (3+4) is closed and the logic input 1 or 2 of the JUMO dTRANS Az 01 is wired up and configured accordingly, the instrument reacts with “HOLD”. This will prevent incorrect dosing as a result of insufficent incident flow on the cell. 08.07/00394438
JUMO GmbH & Co. KG • 36035 Fulda, Germany Data Sheet 20.2630 Page 12/12 Order details (1) Basic type 202630 Measuring cell (2) Basic type extensions 55 peracetic acid 60 hydrogen peroxide (3) Range 1 o o 60 0 — 500 mg/liter (ppm) o o 80 0 — 10,000 mg/liter (ppm) x = fitted as standard o = available as an option (1) (2) (3) Order code / - Order example 202630 / 60 - 60 1 others on request Stock versions (shipment: 3 working days after receipt of order) Type Sales No. Flow-through fitting, Type 202810/01-102/86/080/055 20/00392611 Production versions (shipment: 10 working days after receipt of order) Type Sales No. Measuring cell for hydrogen peroxide, Type 202630/60-60/000 20/00409342 Measuring cell for hydrogen peroxide, Type 202630/60-80/000 20/00409343 Measuring cell for peracetic acid, Type 202630/55-60/000 20/00421852 Measuring cell for peracetic acid, Type 202630/55-80/000 20/00443718 Suitable indicator /controller: JUMO dTRANS Az 01, type 202550/10-665-888, 140-23-00/000 (for other versions, please see Data and Price Sheet 20.2550) 20/00392573 Accessories (shipment: 10 working days after receipt of order) Important: Please always specify the measuring range when ordering spare parts kits for the cells! Designation Spare parts kit for 202630/55 and /60 measuring range 0 to 500 mg/l (ppm) (1 x membrane cap, fine abrasive paper) Spare parts kit for 202630/55 and /60 measuring range 0 to 10.000 mg/l (ppm) (1 x membrane cap, fine abrasive paper) Sales No. 20/00409344 20/00438125 Special electrolyte for 202630/55, 100 ml 20/00440821 Special electrolyte for 202630/60, 100 ml 20/00438126 Flow monitor 20/00396471 Fitting for flow monitor 20/00396470 Mounting bracket for flow-through fitting for chlorine, chlorine dioxide or ozone measuring cells 20/00455706 08.07/00394438
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Analytical Measurement
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JUMO GmbH & Co. KG Delivery address
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Analytical Measurement - Nuova Elva

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