| 型号 | testo557 | 
| 温度测量范围 | -50~ +150 °C 
 | 
| 温度测量精度 | ±0.5℃ | 
| 分辨率 
 | 0.1℃ | 
| 探头连接 
 | 2x连接(NTC) 
 | 
| 压力测量范围 | -1~60bar 
 | 
| 压力测量精度 | ±0.5%全量程 | 
| 分辨率 
 | 0.01 bar 
 | 
| 探头连接 
 | 3x7/16*-UNF + 1x5/8"- UNF 
 | 
| 超载相对压力(高压) 
 | 65 bar 
 | 
| 真空测量范围 | 0 ~ 20000 micron 
 | 
| 真空测量精度 | ±(10 micron + 10 %测量值) (100 ~ 1000 micron) | 
| 分辨率 
 | 
							1 micron (0 ~ 1000 micron) , 10 micron (1000 ~ 2000 micron) , 100 micron (2000 ~ 5000 micron) ,500 micron (5000 ~ 10000 micron),5000 micron (10000 ~ 20000 micron)						 | 
| 重量 | 3250 g 
 | 
| 直径 
 | 220x125x70mm 
 | 
| 操作温度 
 | -20~ +50 °C 
 | 
| 防护等级 
 | IP42 
 | 
| Product colour 
 | Black 
 | 
| 电池寿命 
 | 250 h (without ilumination, without Bluetooth⑧, without vacuum probe) 
 | 
| Pressure media 
 | CFC 
 | 
| 制冷剂 
 | R114; R12; R123; R1233zd; R1234yf (显示:T8 ( testo 557),客户可自行通过"EasyKool" 软件更新制冷剂; R1234ze; R124; R125; R13; R134a; R22;R23; R290; R32; R401A; R401B; R402A; R402B; R404A; R407A; R407C; R407F; R407H; R408A; R409A; R410A; R414B; R41 6A; R420A; R421A; R421B;R422B; R422C; R422D; R424A; R427A; R434A; R437A; R438A; R442A; R444B; R448A; R449A; R450A; R452A; R452B; R453a; R454A; R454B; R454C;R455A; R458A; R500; R502; R503; R507; R513A; R600a; R718 (H2O); R744(COz) 
 | 
| 系统要求 
 | requires ios 7.1 or newer; requires Android 4.3 or newer,; requires mobile end device with Bluetooth 4.0 
 | 
| Refrigerants update via App 
 | R11; FX80; 112A; R1150; R1270; R13B1; R14; R142B; R152A; R161; R170; R227; R236fa; R245fa; R401C; R406A; R407B; R407D; R41; Ra11A; R412A;R413A; R417A; R417B; R417C; R422A; R426A; R508A; R508B; R600; RIS89; SP22 
 | 
| 存放温度 
 | -20~ +60℃ 
 |