Shenzhen Calinmeter Co,.LTD
the only legal owner of CALIN brand and the sole manufacturer of Calin series utility meters. Calinmeter reserve the right to pursue any legal remedies from Anyone or entity who claims as the group or
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The CAW-K series is an STS (Standard Transfer Specification) compliant, electronic valve controlled, prepayment water meter. It is the basic but most money-counts type of prepaid revenue controller for small utilities and service providers. It is built with a 4x3 keypad and motor driven ball valve. Customer can topup by entering recharge token codes via keypad and the meter shuts off when credit drops to zero or any pre-programmed level. With CAW-K series you are assured of continuously good metrology and revenue protection at the same time.The battery lasts 3 years and is replaceable by authroized technicians.
As STS standard is operating with codes, the recharge tokens can be transferred and distributed wirelessly. Mobile payment, online payment can be utilized to vend. Customers purchase credit with their mobile devices 24 x 7 at anytime. The recharge code is unique and only can be accepted by the specific meter.
| Nominal size | Dn | mm | in-line | ||
| 15 | 20 | 25 | |||
| Maximum flow rate | Q4 | m3/h | 3.125 | 5.0 | 7.875 |
| Ratio “R" | Q3/Q1 | 80 | 80 | 80 | |
| Permanent l flow rate | Q33 | m3/h | 2.5 | 4.0 | 6.3 |
| Transitional flow rate | Q22 | 0.05 | 0.08 | 0.126 | |
| Minimum flow rate | Q11 | 0.031 | 0.05 | 0.0787 | |
| Minimum reading | m3 | 0.0005 | |||
| Maximum reading | 99999 | ||||
Q1≤Q≤,Q2 MPE =± 5% Q2≤Q≤Q4, MPE= ± 2% (For hot water metering, MPE=± 3%)
| Nominal size | Length | Width | Height | Thread |
| mm | D | |||
| 15 | 165 | 101 | 124 | G3/4B |
| 20 | 195 | 101 | 124 | G1B |
| 25 | 225 | 101 | 124 | G5/4B |